編程第七十五天

java設置監聽器 點擊後清空TextField中內容

package test;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;

public class JTest extends JFrame {
JTextField jtf = new JTextField();
JButton jbtn = new JButton("reset");
public JTest()
{
super();

this.setSize(200,200);
this.setLayout(null);
jtf.setVisible(true);
jtf.setBounds(10, 10, 80, 30);
jbtn.setBounds(50, 50, 80, 30);
jbtn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
jtf.setText("");
}
});

this.add(jtf);
this.add(jbtn);
this.setVisible(true);
}
public static void main(String[] args)
{
JTest jt = new JTest();
}

}